Small integrated portable relay protection test teaching device and use method thereof

Abstract

The invention discloses a small integrated portable relay protection test teaching device and a use method, the small integrated portable relay protection test teaching device comprises a box body, the front side of the box body is provided with a reset button and a reclosing mode switching handle, the box body is internally provided with a rectifier bridge and a line differential protection device, and the operation surface and the display surface of the line differential protection device are located at the front side of the box body. A bottom protection plate is arranged at the bottom of the box body, a plurality of universal wheels are arranged at the bottom of the bottom protection plate, a front protection plate with the lower end hinged to the bottom protection plate is arranged on the front side of the box body, a rear protection plate with the lower end hinged to the bottom protection plate is arranged on the rear side of the box body, a top protection plate is arranged above the box body, the front side of the top protection plate is hinged to the front protection plate, and the rear side of the top protection plate is hinged to the rear protection plate; a first positioning assembly is arranged between the front protective plate and the top protective plate; a second positioning assembly is arranged between the top protection plate and the rear protection plate; and a connecting mechanism in a separated state is arranged between the box body and the front protective plate. The device has the advantages of being not prone to faults and convenient to use.

Description

Technical Field

[0001] The invention relates to a small integrated portable relay protection test teaching device and a use method. Background Art

[0002] In a hydropower plant, new relay protection employees need to be trained. One of the training contents is to use the relay protection test teaching device (referred to as the teaching device) to simulate various line faults, so that employees can have a deeper understanding of the working principle of line protection, overcome the short construction period and long cycle during on-site operations, the lack of experience of technical personnel, poor technical level and human factors that cause omissions, missing items, work delays, etc. At the same time, it improves the staff's ability to handle faults, maintenance quality and work efficiency, and facilitates technical training and summary.

[0003] The existing teaching device includes a box body, a plurality of universal wheels are arranged at the bottom of the box body, a reset button and a reclosing mode switching handle are arranged on the front side of the box body, a protection pressure plate, a terminal block, a DC circuit breaker, a rectifier bridge and a line differential protection device are arranged in the box body, and the operation surface and display surface of the line differential protection device are on the front side of the box body.

[0004] The teaching device is used in conjunction with a relay protection instrument. The relay protection instrument outputs a variable AC voltage to the line differential protection device in the teaching device, causing the line differential protection device to generate fault information and take corresponding actions to trip the corresponding simulated circuit breaker to which it is connected. At the same time, the line differential protection device can also transmit the fault information to a computer and a printer.

[0005] The existing teaching devices are provided to various hydropower plants for use in turn, which means that there is a need for frequent transportation. During transportation, since the reset button, reclosing mode switching handle and other devices protrude from the outside of the frame box, they are easily damaged by bumps, resulting in malfunctions of the teaching devices. It is also difficult to find suitable packaging materials for each transportation process. In addition, since the height of the teaching device itself is relatively low, it is inconvenient for employees to operate during the teaching process. They need to find corresponding objects such as tables to raise the height, which brings inconvenience to the use of the teaching device. Summary of the invention

[0006] The purpose of the present invention is to provide a small integrated portable relay protection test teaching device and a method of using the device. The present invention has the advantages of being not prone to failure and being easy to use.

[0007] The technical solution of the present invention is as follows: a small integrated portable relay protection test teaching device comprises a box body, a reset button and a reclosing mode switching handle are arranged on the front side of the box body, a rectifier bridge and a line differential protection device are arranged in the box body, and an operation surface and a display surface of the line differential protection device are both located on the front side of the box body, and the characteristics are as follows: a bottom guard plate is arranged at the bottom of the box body, a plurality of universal wheels are arranged at the bottom of the bottom guard plate, a front guard plate is arranged at the front side of the box body, a rear guard plate whose lower end is hinged to the bottom guard plate is arranged at the rear side of the box body, a top guard plate is arranged above the box body, the front side of the top guard plate is hinged to the front guard plate, and the rear side of the top guard plate is hinged to the rear guard plate;

[0008] A first positioning assembly is provided between the front guard plate and the top guard plate, the first positioning assembly comprising a first slide groove located at the front end of the top guard plate, a second slide groove located at the upper end of the front guard plate, and two first slide plates respectively located at the front and rear sides of the front guard plate, and a first connecting plate passing through the second slide groove is provided between the two first slide plates;

[0009] A second positioning assembly is provided between the top guard plate and the rear guard plate, the second positioning assembly comprising a third slide groove located at the rear end of the top guard plate, a fourth slide groove located at the upper end of the rear guard plate, and two second slide plates respectively located at the front and rear sides of the top guard plate, and a second connecting plate passing through the third slide groove is provided between the two second slide plates;

[0010] A connection mechanism in a separated state is provided between the box body and the front guard plate.

[0011] In the aforementioned small integrated portable relay protection test teaching device, there are two of each of the first positioning components and the second positioning components.

[0012] In the aforementioned small integrated portable relay protection test teaching device, the first positioning component has two first slide grooves and two second slide grooves, and the second positioning component has two third slide grooves and two fourth slide grooves.

[0013] In the aforementioned small integrated portable relay protection test teaching device, the width of the first slide plate is 1.5-2 times the distance between the two second slide grooves, and the width of the second slide plate is 1.5-2 times the distance between the two third slide grooves.

[0014] In the aforementioned small integrated portable relay protection test teaching device, the connecting mechanism includes a first plug-in located on the inner side of the front guard plate and a second plug-in located on the rear side of the box body. The upper end of the first plug-in is fixed to the front guard plate, and both ends of the second plug-in are fixed to the box body. A socket that cooperates with the first plug-in is formed between the second plug-in and the box body.

[0015] In the aforementioned small integrated portable relay protection test teaching device, side guard plates are provided on both sides of the box body, the bottom guard plate and the rear guard plate are fixed to the side guard plates, and a surround plate located on the front side of the box body is provided between the two side guard plates, the surround plate is close to the bottom guard plate, and the front guard plate is connected to the surround plate lock.

[0016] In the aforementioned small integrated portable relay protection test teaching device, handle mechanisms are provided on both the left and right sides and the top of the box body, and first through holes corresponding to the positions of the corresponding handle mechanisms are provided on the top guard plate and the side guard plates.

[0017] In the aforementioned small-scale integrated portable relay protection test teaching device, the handle mechanism includes a second through hole located on the side wall of the box body and a mounting plate located in the box body, the mounting plate covers the second through hole, the mounting plate is fixed to the box body, and a handle located in the second through hole is provided on the outer side of the mounting plate. The handle is U-shaped, and both ends of the handle are rotatably connected to the mounting plate. The upper sides of both ends of the handle are provided with limit plates fixed to the mounting plate.

[0018] In the aforementioned small integrated portable relay protection test teaching device, a pin close to the front guard plate is provided on the top surface of the side guard plate, and a groove matching the pin is provided on the bottom surface of the top guard plate.

[0019] The method of using the aforementioned small integrated portable relay protection test teaching device is as follows: during teaching, open the lock between the front guard plate and the enclosure, flip the front guard plate upwards, flip the top guard plate upwards, so that the front guard plate, top guard plate and rear guard plate are in the same plane, move the first positioning assembly and the second positioning assembly downwards, so that the front guard plate, top guard plate and rear guard plate are fixed in the same plane, take out the box body, and fix the box body to the front guard plate through the connecting mechanism.

[0020] The method of using the aforementioned small integrated portable relay protection test teaching device is as follows: during teaching, open the lock between the front guard plate and the enclosure, flip the front guard plate upwards, flip the top guard plate upwards, so that the front guard plate, top guard plate and rear guard plate are in the same plane, move the first positioning assembly and the second positioning assembly downwards, so that the front guard plate, top guard plate and rear guard plate are fixed in the same plane, take out the box body, and fix the box body to the front guard plate through the connecting mechanism.

[0021] Compared with the prior art, the present invention adds a front guard plate, a rear guard plate and a top guard plate on the basis of the existing teaching device, which can effectively protect the teaching device during transportation and prevent the vulnerable parts of the teaching device from being knocked and malfunctioning. At the same time, during teaching, by flipping the front guard plate and the top guard plate and hanging the box on the front guard plate, the height of the teaching device can be effectively increased, which is convenient to use. Therefore, the present invention has the advantages of being not prone to malfunction and being easy to use.

[0022] By optimizing the structure of the positioning components between the guard plates, the connection strength between the guard plates after locking is greater and less prone to deformation, thus extending the service life. By optimizing the structure of the handle mechanism, the handle can be hidden, which not only prevents the handle from being damaged by bumps, but also reduces the volume. The limit upward flip angle of the handles on both sides of the box is limited by the limit plate, so that the hands are not pinched when lifting the teaching device, and the safety of use is good. In addition, through further structural optimization, the present invention also has the advantages of being small in size and basically not affecting the original portability, and has a greater structural strength and a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention in a transport state.

[0024] Figure 2 It is a schematic diagram of the use of the present invention in the front view in the teaching state.

[0025] Figure 3 It is a schematic diagram of the use of the present invention in the rearward direction in the teaching state.

[0026] Figure 4 yes Figure 2 Enlarged view at A.

[0027] Figure 5 This is a diagram of the box connected to the front guard.

[0028] The markings in the accompanying drawings are: 1-box, 2-reset button, 3-reclosing mode switching handle, 4-line differential protection device, 5-bottom guard plate, 6-universal wheel, 7-front guard plate, 8-rear guard plate, 9-top guard plate, 10-first slide, 11-second slide, 12-first slide plate, 13-first connecting plate, 14-third slide, 15-fourth slide, 16-second slide, 17-second connecting plate, 18-first plug, 19-second plug, 20-jack, 21-side guard, 22-enclosure, 23-first through hole, 24-second through hole, 25-mounting plate, 26-handle, 27-limiting plate, 28-pin, 29-slot. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0030] Example. A small integrated portable relay protection test teaching device, such as Figure 1 As shown, it includes a box body 1, a reset button 2 and a reclosing mode switching handle 3 are arranged on the front side of the box body 1, a rectifier bridge and a line differential protection device 4 are arranged in the box body 1, and the operation surface and display surface of the line differential protection device 4 are both located on the front side of the box body 1, and the features are as follows:

[0031] A bottom guard plate 5 is provided at the bottom of the box body 1, a plurality of universal wheels 6 are provided at the bottom of the bottom guard plate 5, a front guard plate 7 is provided at the front side of the box body 1, a rear guard plate 8 is provided at the rear side of the box body 1, a top guard plate 9 is provided above the box body 1, a front side of the top guard plate 9 is hinged to the front guard plate 7, and a rear side of the top guard plate 9 is hinged to the rear guard plate 8;

[0032] Two first positioning components are arranged between the front guard plate 7 and the top guard plate 9. The first positioning components include two first slide grooves 10 located at the front end of the top guard plate 9, two second slide grooves 11 located at the upper end of the front guard plate 7, and two first slide plates 12 located at the front and rear sides of the front guard plate 7, respectively. A first connecting plate 13 passing through the second slide groove 11 is arranged between the two first slide plates 12; the two first slide grooves 10 are aligned with the two second slide grooves 11 respectively. The width of the first slide plate 12 is 1.5-2 times the distance between the two second slide grooves 11, so that the first slide plate 12 covers the second slide groove 11.

[0033] Two second positioning components are arranged between the top guard plate 9 and the rear guard plate 8, and the second positioning components include two third slide grooves 14 located at the rear end of the top guard plate 9, two fourth slide grooves 15 located at the upper end of the rear guard plate 8, and two second slide plates 16 located at the upper and lower sides of the top guard plate 8, respectively. A second connecting plate 17 passing through the third slide groove 14 is arranged between the two second slide plates 16; the two third slide grooves 14 are respectively aligned with the two fourth slide grooves 15. The width of the second slide plate 16 is 1.5-2 times the distance between the two third slide grooves 14, so that the second slide plate 16 covers the third slide groove 14.

[0034] A connection mechanism in a separated state is provided between the box body 1 and the front guard plate 7. The connection mechanism comprises a first plug-in piece 18 located inside the front guard plate 7 and a second plug-in piece 19 located at the rear side of the box body 1. The upper end of the first plug-in piece 18 is fixed to the front guard plate 7, and both ends of the second plug-in piece 19 are fixed to the box body 1. A plug-in hole 20 that matches the first plug-in piece 18 is formed between the second plug-in piece 19 and the box body 1.

[0035] The box body 1 is provided with side guard plates 21 on both the left and right sides, the bottom guard plate 5 and the rear guard plate 8 are fixed to the side guard plates 21, and a panel 22 is provided between the two side guard plates 21, which is located at the front side of the box body 1. The panel 22 is close to the bottom guard plate 5, and the front guard plate 7 is locked with the panel 22 (the locking is omitted in the figure). The panel 22 increases the strength of the side guard plates 21 against lateral impact, and at the same time provides a fulcrum for fixing the front guard plate 7.

[0036] The left and right sides and the top of the box body 1 are provided with handle mechanisms, and the top guard plate 9 and the side guard plate 21 are provided with first through holes 23 corresponding to the positions of the corresponding handle mechanisms.

[0037] The handle mechanism includes a second through hole 24 located on the side wall of the box body 1 and a mounting plate 25 located in the box body 1. The mounting plate 25 covers the second through hole 24 and is fixed to the box body 1. A handle 26 located in the second through hole 24 is provided on the outside of the mounting plate 25. The handle 26 is U-shaped, and both ends of the handle 26 are rotatably connected to the mounting plate 25. For the handles 26 located on the left and right sides of the box body, the upper sides of both ends of the handles are provided with limit plates 27 fixed to the mounting plate 25. The limit plates 27 limit the maximum upward flip angle of the handle to prevent the hand from being pinched.

[0038] The top surface of the side guard plate 21 is provided with a pin 28 close to the front guard plate 7, and the bottom surface of the top guard plate 9 is provided with a notch 29 that cooperates with the pin 28. The pin 28 increases the strength of the top guard plate against lateral impact.

[0039] As a further preference, a buffer layer such as a rubber plate or a sponge plate can be provided on the inner side of the front guard plate 7 to further prevent damage to the components on the front side of the box body 1. In further optimization, a buffer layer can also be provided on the inner side of the side guard plate, the top guard plate and the rear guard plate, and the thickness of the buffer layer can be 0.5 cm.

[0040] How to use: Figure 1 As shown, it is in a state of storage, transportation, etc., which is not used for teaching. When transported manually, the universal wheels at the bottom can be used to facilitate forward movement. When encountering obstacles such as steps, the entire device can be lifted by one hand through the top handle, or by holding the handles on both sides with both hands, which is convenient to move.

[0041] When teaching, open the lock, open the lock between the front guard plate 7 and the enclosure 22, flip the front guard plate 7 upwards, flip the top guard plate 9 upwards, so that the front guard plate 7, the top guard plate 9 and the rear guard plate 8 are in the same plane, move the first positioning assembly and the second positioning assembly downwards, so that the front guard plate 7, the top guard plate 9 and the rear guard plate 8 are fixed in the same plane, lift the box 1 by the handle on the top of the box 1, pass the first plug 18 on the front guard plate 7 through the socket 20, and hang the box 1 on the front guard plate 7. The height of the box 1 is increased, which is convenient for teaching and operation.

Claims

1. A small integrated portable relay protection test teaching device, comprising a box (1), a reset button (2) and a reclosing mode switching handle (3) are arranged on the front side of the box (1), a rectifier bridge and a line differential protection device (4) are arranged in the box (1), and an operation surface and a display surface of the line differential protection device (4) are both located on the front side of the box (1), characterized in that: A bottom guard plate (5) is provided at the bottom of the box body (1), a plurality of universal wheels (6) are provided at the bottom of the bottom guard plate (5), a front guard plate (7) whose lower end is hinged to the bottom guard plate (5) is provided at the front side of the box body (1), a rear guard plate (8) whose lower end is hinged to the bottom guard plate (5) is provided at the rear side of the box body (1), a top guard plate (9) is provided above the box body (1), the front side of the top guard plate (9) is hinged to the front guard plate (7), and the rear side of the top guard plate (9) is hinged to the rear guard plate (8); A first positioning assembly is provided between the front guard plate (7) and the top guard plate (9), the first positioning assembly comprising a first slide groove (10) located at the front end of the top guard plate (9), a second slide groove (11) located at the upper end of the front guard plate (7), and two first slide plates (12) respectively located at the front and rear sides of the front guard plate (7), and a first connecting plate (13) passing through the second slide groove (11) is provided between the two first slide plates (12); A second positioning assembly is provided between the top guard plate (9) and the rear guard plate (8), the second positioning assembly comprising a third slide groove (14) located at the rear end of the top guard plate (9), a fourth slide groove (15) located at the upper end of the rear guard plate (8), and two second slide plates (16) respectively located at the front and rear sides of the top guard plate (9), and a second connecting plate (17) passing through the third slide groove (14) is provided between the two second slide plates (16); A connection mechanism in a separated state is provided between the box body (1) and the front guard plate (7).

2. The small integrated portable relay protection test teaching device according to claim 1 is characterized in that: There are two of each of the first positioning components and the second positioning components.

3. The small integrated portable relay protection test teaching device according to claim 1 is characterized in that: The first positioning component has two first sliding grooves (10) and two second sliding grooves (11), and the second positioning component has two third sliding grooves (14) and two fourth sliding grooves (15).

4. The small integrated portable relay protection test teaching device according to claim 3 is characterized by: The width of the first slide plate (12) is 1.5-2 times the distance between the two second slide grooves (11), and the width of the second slide plate (16) is 1.5-2 times the distance between the two third slide grooves (14).

5. The small integrated portable relay protection test teaching device according to claim 1 is characterized in that: The connection mechanism comprises a first plug-in piece (18) located inside the front guard plate (7) and a second plug-in piece (19) located at the rear side of the box body (1); the upper end of the first plug-in piece (18) is fixed to the front guard plate (7), both ends of the second plug-in piece (19) are fixed to the box body (1), and a plug hole (20) that matches the first plug-in piece (18) is formed between the second plug-in piece (19) and the box body (1).

6. The small integrated portable relay protection test teaching device according to claim 1 is characterized in that: The box body (1) is provided with side guard plates (21) on both left and right sides, the bottom guard plate (5) and the rear guard plate (8) are fixed to the side guard plates (21), a surrounding plate (22) located at the front side of the box body (1) is provided between the two side guard plates (21), the surrounding plate (22) is close to the bottom guard plate (5), and the front guard plate (7) is connected to the surrounding plate (22) by a lock.

7. The small integrated portable relay protection test teaching device according to claim 6 is characterized in that: The box body (1) is provided with handle mechanisms on both the left and right sides and the top, and the top guard plate (9) and the side guard plate (21) are provided with first through holes (23) corresponding to the positions of the corresponding handle mechanisms.

8. The small integrated portable relay protection test teaching device according to claim 7 is characterized in that: The handle mechanism comprises a second through hole (24) located on the side wall of the box body (1) and a mounting plate (25) located in the box body (1); the mounting plate (25) covers the second through hole (24); the mounting plate (25) is fixed to the box body (1); a handle (26) located in the second through hole (24) is provided on the outer side of the mounting plate (25); the handle (26) is U-shaped; both ends of the handle (26) are rotatably connected to the mounting plate (25); and both ends of the handle (26) are provided with a limit plate (27) fixed to the mounting plate (25) on the upper side.

9. The small integrated portable relay protection test teaching device according to claim 6 is characterized by: A pin (28) close to the front guard plate (7) is provided on the top surface of the side guard plate (21), and a notch (29) matching with the pin (28) is provided on the bottom surface of the top guard plate (9).

10. The method for using the small integrated portable relay protection test teaching device according to any one of claims 1 to 9, characterized in that: During teaching, the lock between the front guard plate (7) and the enclosure plate (22) is opened, the front guard plate (7) is flipped upward, the top guard plate (9) is flipped upward, so that the front guard plate (7), the top guard plate (9) and the rear guard plate (8) are in the same plane, the first positioning assembly and the second positioning assembly are moved downward, so that the front guard plate (7), the top guard plate (9) and the rear guard plate (8) are fixed in the same plane, the box body (1) is taken out, and the box body (1) is fixed to the front guard plate (7) through the connecting mechanism.

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